#left-menu{
  width: 80%;
  background: white;
  margin: 25px;
  border: 2px solid black;
  border-radius: 14px;
  padding: 15px;
  padding-top: 0;
}

#center-toc{
  text-align: center;
}

#left-menu h3{
  text-align: center;
}

#left-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

#left-menu ol {
  margin: 0;
}

.menuItemContainer {
  width: 100%;
}

.menuItem {
  background: #00988e;
  color: white;
  display: block;
  margin: 20px 0;
  margin-bottom: 0;
  padding: 10px 15px;
  border: 2px solid black;
  border-radius: 8px;
  text-align: center;
  transition: 0.2s ease-in-out;
  cursor: pointer;
  font-weight: bold;
}

.menuItem:hover, .menuItem.active {
  background: #00988e;
  color: white;
}

.menuItem.active {
  margin-bottom: 0;
}


.sub-menu ol{
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.sub-menu a{
  text-decoration: none;
  color: black;
  transition: 0.2s ease;
}

.sub-menu a:hover {
  text-decoration: underline;
  
}

.sub-menu li {
  padding: 5px 15px;
  transition: 0.2s ease;
}

.sub-menu li:hover{
  text-decoration: underline;
}

.sub-menu {
  /* display: none; */
  background: #00988e;
  transition: 0.2s ease-in-out;
  border: 2px solid black;
  border-top: 0px;
  margin: 0 20px;
  padding: 10px 0;
  border-radius: 0 0 20px 20px;
  font-weight: bold;
  font-size: 15px;
}

.app {
  display: flex;
  flex: 1; /* Take up remaining height */
  overflow: hidden;
  background: #c9c9c9;
  justify-content: space-evenly;
}